Bush-hammer



G MAIN BUSH HAMMER.

, (No Model.)

No. 552,848. Patented Jan. 7, 1896.

gw Z fu im l ///////AV//////A WIT ,55555 UNTTED STATES PATENT @ericaGEORGE MAIN, OF QUNCY, MASSACHUSETTS.

BUSH-HAMMER.

SPECIFICATION forming part of Letters Patent No. 552,848, dated January7, 1896.

Application tiled May 6, 1893` Serial No. 473,258. (No model.)

.To aU 107mm/ it may concern:

Be it known that l, GEORGE MAIN, of Quincy, in the county of Norfolk andState ot' Massachusetts, have invented certain new and usefulImprovements in Bush-Hammers, of which the following is a lfull, clear,and exact description.

This invention consists of a bush-hammer constructed and arranged foroperation, all substantially as hereinafter described, reference beinghad to the accompanying sheets of drawings, in which- Figure l is aperspective view; Fig. 2, a longitudinal central section of abush-hammer constructed in accordance with this invention.

ln the drawings, A is the hammer; B, its head,which consists of anoblong block of suitable metal, of the width desired for the cut-- tersC, and oi a thickness a little more than the aggregate thickness of theseveral cutters when secured in place.

D is the hole or aperture in the head to receive the handle, as usual.

E are two plates of the width oi' the head, each having a transverserecess or groove F on one side having shoulders G, in which recesses thehead is placed, the two plates being placed over the head, as shown,closely litting the same, the free ends ll of the plates extendingbeyond the head, leaving a space J between them, in which is placed thecutters C of the number desired, their inner ends K resting and bearingagainst the ends L of the heads.

The head on each side at M at each end is cut away back from the endpreferably in an inclined direction, as shown, leaving the edge orbearing place N for the plates. These plates are applied in place on thehead a-nd all riveted together by the rivets P to be :firmly and rigidlyconnected thereto, and the cutters then put in place between the freeends 1l of the plates and secured by the bolts Q passing through theplates and cutters. The head makes a firm and solid seat for thecutters, and the plates having the recesses F, so that their free endsentend over the ends of the heads, as shown, make the seats for thecutters a short distance from the sides R of the head, whereby therewill be no danger of clipping or breaking the head, and thus thefirmness of the seat for the cutters is secured.

By having the bearing-line N of the plates on the head back from theends of the head, the plates have more or less spring beyond the headwithout diminishing their hold on the cutters, by which when the boltsare taken out the cutters can be easily removed from the head whendesirous of sharpening them, or for other purposes,and as easily put inplace again.

The bearing-line N on the head for the plates can be made or arranged inany other suitable manner than as herein particularly shonuiforinstance,by a right-angular shoulder-although it is preferable to cut itaway gradually or beveling, as shown, as it does not weaken the headquite so much, and leaves the bearing end L of the head as well for thepurpose described.

If desirous, the recess in the plates can be dispensed with, the platebeing straight, but it would not be so well, as the outer cutters wouldnot have sufficient bearing on the head to give the firmness andresistance desired.

The plates have transverse ribs S on their inner side which are disposedin transverse grooves T in the sides, closely fitting the same, of thehead, and preferably located where the bolts are, as shown, whichrelieve the blow and strain upon the rivets in the u'se of the hammer,although these ribs and grooves can be dispensed with` As is obvious,only one end of the hammer need have the head and plates arranged toreceive the cutters, so it can be used in chisel form, one end being aduplication of the other.

Having thus described my invention, what I claim istl. In a bush hammer,in combination, a head, plates one on each side secured thereto,extending beyond the end of the head, each plate having a transverserecess in its side next tothe head in which the head is disposed, eachplate beyond the head extending a short distance over the end of thehead, and the bearing line for the plates on each side of the head beingback from its end.

2. In a bush hammer, in combination, a head having a transverse grooveon each side, plates secured thereto, one on each side, each IOO havingatransverse recess for the head and a transverse rib to fit the groove inthe head,

, and the head having its bearing line for the Li. In a bnsh hammer, incombination, a head having a transverse groove on each side, platessecured thereto, one each side, each having a transverse rib to fit saidgroove, and said head having the hearing line for the plates on eachside back from 4its end.

In testimony whereof I have hereunto set my hand in the presence of tivosubscribing witnesses.

GEORGE MAIN.

TWitnesses:

EDWIN W. BROWN, LEONA C. ARNO.

